{ "items" : [
    { "id" : "http://dbpedia.org/resource/Human-rating_certification"
      "properties" : {
        "http://www.w3.org/2000/01/rdf-schema#comment" : [ "Human-rated or man-rated are terms used to describe the certification of a spacecraft, launch vehicle or airplane as worthy of transporting humans. NASA and the U.S."] } } }
